单选题 The central idea conveyed in the passage is that ______.

A、 although robots can do much dangerous and tiring work, humans are superior
B、 although humans are superior, robots can do much better in many areas of work
C、 robots will replace humans in more and more fields
D、 robots are superior to humans because they can do much work that humans can't do

【正确答案】 C

【答案解析】文章的最后一段就是本题的中心思想，这就等于说“Robots will replace humans in more and more fields”。